Não informado. (1960). Geomorphological abstracts. Department of Geography, School of Economics and Political Science.
Citação do estilo Chicago (17ª ed.)Não informado. Geomorphological Abstracts. London: Department of Geography, School of Economics and Political Science, 1960.
Citação MLA (8ª ed.)Não informado. Geomorphological Abstracts. Department of Geography, School of Economics and Political Science, 1960.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.